BIO 203



Welcome to my Irukandji Jellyfish Webpage!

 Wikimedia Commons: GondwanaGirl


   On this website, you will find tons of information all about our tiny venomous friend, Carukia barnesi! This species may be small (a bell size of only 0.5 cm to 1 cm in diameter), but believe me, there is nothing small about its impact; especially on humans if we get in the way of their zapping tentacles! So you may be wondering, “How on earth can something so minuscule function?!” Well, head on over to the adaptation, nutrition, and reproduction pages to learn all about the parts of this jelly’s body, how it hunts (yes, this little guy hunts!), and how it reproduces and develops. Interested in where to find Carukia barnesi? Follow the habitat link to learn what marine waters house these petite predators and the interactions link to find out what other organisms meet this jelly in its habitat! If you’re itching for some crazy facts, click here to find out how this jellyfish was discovered and what its dangerous venom does to the body. But wait a second, where does this jellyfish fit amongst all the other organisms on our planet? What is it related to, why is it related to them, and what exactly does its name mean anyway?  Those great questions can easily be answered by clicking on the classification link!


   I hope you have fun exploring this website and learning all about Carukia barnesi!


   I have created this website for my 2013 spring semester Organismal Biology class, taught by Dr. Thomas Volk, Dr. Gregory Sandland, and Dr. Gretchen Gerrish, at the University of Wisconsin-La Crosse.


You can find many more informational organism webpages at


Please feel free to contact me with any questions or comments!
Kelsey Lyons


                                 Next stop:  Classification




Last Updated: April 26, 2013

Wikimedia Commons: Peter Southwood     Wikimedia Commons: GondwanaGirl    Wikimedia Commons: Zaneta Nemcokova